In that past ten years, I have been recording my daily activities in Moleskine daily planners. I am using the small size daily planner with one page per day. I always carries it with me. The main motivation to start doing it, was to fight the feeling that time is going faster and faster. It takes me about a quarter of an hour per day. I do not record every things, just the things I think a worth recording. I do track all of my movements. I have thought about recording everything in a database, but never come to it. For some time, I have been tracking my travels with Google Earth. The last year, I have started doing this again for for walking and biking 'trips' I make. I do not do it for any purpose, but now that I have started this habit, I am afraid I will stick to it. In some occasions, it has been of some resolve some questions, but in other instances, my notes where not detailed enough. I do use my personal website to track certain events. I wonder whether it is worth collecting large amount of data and thinking that in the future it might be of some benefit. If it is worth investing some energy now to record it in an organized manner, it might be of some use in the future.